Predicted and measured bottomside F-region electron density and variability of the D1 parameter under quiet and disturbed conditions over Europe
1.
SYSNO ASEP
0104051
Document Type
J - Journal Article
R&D Document Type
Journal Article
Subsidiary J
Ostatní články
Title
Predicted and measured bottomside F-region electron density and variability of the D1 parameter under quiet and disturbed conditions over Europe
Title
Předpovězena a měřena elektronová koncentrace v dolní části ionosférické F vrstvy a variabilita parametru D1 za klidných a porušených geomagnetických podmínkách
Author(s)
Burešová, Dalia (GFU-E) Altadill, D. (ES) Mosert, M. (AR) Miro, G. (IT)
Source Title
Advances in Space Research. - : Elsevier
- ISSN 0273-1177
Roč. 34, č. 9 (2004), s. 1973-1981
Number of pages
9 s.
Language
eng - English
Country
NL - Netherlands
Keywords
Ionosphere ; Geomagnetic storm ; Electron density
Subject RIV
DG - Athmosphere Sciences, Meteorology
R&D Projects
IAA3042102 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ
AV0Z3042911 - UFA-U, BC-A
Annotation
Modelling and forecasting of ionospheric parameters is very useful for different radio communication purposes. As long as variations in the ionosphere form regular patterns, the empirical International Reference Ionosphere model, IRI 2000, provides sufficiently accurate corrections to the maximum electron density, NmF2, to predict the ionospheric effects on radio wave propagation. During geomagnetic storms, however, agreement between the IRI 2000 model and observations is still insufficient. This paper deals with the analysis of measured and model predicted F-region electron densities under quiet and disturbed conditions with the main emphasis placed on the distribution of the F1-region daytime ionisation. Available electron density profiles obtained from ionograms for selected periods from several European ionospheric stations (Pruhonice, Ebro, Arenosillo) were compared with IRI 2000 model results. Comparative analysis shows that discrepancies do exist predominantly during the storm main phase. The model predicted daytime electron densities at the fixed F1-region heights are closer to observed values during summer than winter. Dependences of D1 on solar activity and season are also analysed
